Covered Structure Expansion Joint
EGIS Joint Construction Method
EGIS Joint Construction Method which is applicable to covered structure expansion joint, prevents crack and Pot-Hole of upper asphalt pavement layer which is occured at ground
characteristic changing location, structure's section changing location, secures safety of vehicles and high speed ability. Also, it is possible to feel silent during vehicle
driving by Jointless construction. prolong public usage life cycle of expansion joint by induced drain with slab drain for percolating water which is percolated into ascon,
prevents see-saw phenomenon (excitation, corrossion, etc) using complementary textile with flexible material.
Characteristics & Advantages of Covered Structure Expansion Joint
- - Excellent Contruction Ability: Short trasportaion block due to simple construction type & short curing time
- - Excellent Driving Ability: Excellent speedy driving due to no sevearance section on asphalt pavement surface
- - Excellent Sound Absorption Ability: Noiseless due to no sevearance section between pavement layer and expansion joint portion
- - Excellent Maintenance ability: Possible partial repair when there is problem in small area
- - Excellent Waterproof Ability: Perfectly prevent water leakage with strong adhesion with cutting section
- - Excellent Durability: Excellent durability toward abrasion & impact
- - Excellent Economic Feasibility: Low construction cost compared with other construction method by similar type of business
- - Excellent Drain Ability: Excellent drain ability for underground leakage water & percolating water of pavement in case of waterproof layer block
Elastic Seal Material Performance for Expansion Joint
| Items |
Criteria |
Result |
Judgement |
Test Method |
| Cone Penetration (25℃, 150g, 5 Sec.) |
Under 75 |
44.7 |
OK |
ASTM D 6297 |
| Cone Penetration (-18℃, 200g, 60 Sec.) |
Over 10 |
12.8 |
OK |
| Elasticity Recovery Rate (25℃, 75g) |
40~70% |
46.5 |
OK |
| Flow Degree (60℃,5hr) |
Under 3.0 |
1.21 |
OK |
Asphalt Suitability
(Asphalt Compatible) |
All serene |
All serene |
OK |
| Adhesivity (-7℃) |
All serene |
All serene |
OK |
| Low Temperature Flexibility (-23℃) |
All serene |
All serene |
OK |
| Softning Point |
Over 83 |
93 |
OK |
ASTM D 36 |
| Ductility (25℃, 5cm/min) |
Over 40 |
45 |
OK |
ASTM D 113 |
| Adhesion in Tension - Expansion coefficient at fracture |
Over 700 |
727 |
OK |
ASTM D 5329 |
Covered Structure Expansion Joint Construction Example
Before Construction
Before Construction
Before Construction
After Construction
After Construction
After Construction
/Business/Covered Structure Expansion Joint